Engines

Engines, fueling and tuning

  1. 8-valve

    Section for all 8-valve engines
    Discussions:
    3,975
    Messages:
    37,334
    Latest: white oil pressure switch part number references 1.6 bar Jwoodhe1, Jul 18, 2025 at 5:39 PM

  2. 16-valve

    Section for all things related to 16-valve engines
    Discussions:
    4,936
    Messages:
    61,711
    Latest: 16V ABF engine - very high emissions! Peffa, Jul 10, 2025

  3. 1.8 & 1.8T

    Section for all things related to the 20-valve 4 cyl engine
    Discussions:
    2,784
    Messages:
    26,384
    Latest: Open Circuits eddiedebo, Jul 16, 2025 at 8:09 AM

  4. VR5, VR6 & Wx

    Section for all things related to the VR6 & V6 engines
    Discussions:
    1,248
    Messages:
    10,867
    Latest: Mk2 12v VR6 Intake Piping JVNotts, Jul 15, 2025 at 3:09 PM

  5. FSI (inc. GTI 2.0T)

    Section for all things related to the new breed engines (EA888, EA113, FSI, TSI, TFSI - call them what you will)
    Discussions:
    149
    Messages:
    1,285
    Latest: FSI/TFSI into a mk2, best mounting solution? Toyotec, Jun 20, 2025

  6. Diesel

    Section for all things related to diesel engines
    Discussions:
    791
    Messages:
    6,816
    Latest: 1Z 1.9 tdi pump timing issue danster, Jun 29, 2025
Page 1 of 1120
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Title Start Date
Replies Views ↓
Last Message
  1. rubjonny
    Sticky

    OEM MK4 management wiring => Mk1/2/3 harness install FAQ (Now with added dieselness!)

    rubjonny, Nov 8, 2013 ... 48 49 50
    Replies:
    981
    Views:
    496,267
    rubjonny
    Jun 17, 2025
  2. A.N. OTHER
    Sticky

    4 cylinder bore & stroke combinations + max bore & stroke list

    A.N. Other, Jan 20, 2011 ... 2 3
    Replies:
    43
    Views:
    51,558
    HPR
    Jun 11, 2020
  3. VW_SINGH
    Sticky

    Mk1 Golf - Fuel starvation on right hand bends.Analysis and conclusion

    vw_singh, Jun 30, 2009
    Replies:
    15
    Views:
    17,694
    vw_singh
    Jul 3, 2009
  4. A.N. OTHER
    Sticky

    The GTI Engine and its humble origins

    A.N. Other, Sep 28, 2010
    Replies:
    13
    Views:
    13,202
    A.N. Other
    Sep 30, 2010
  5. CRISPY 8V
    Locked Sticky

    VAG COM Users in FAQ

    Crispy 8V, Jun 27, 2006
    Replies:
    0
    Views:
    11,634
    Crispy 8V
    Jun 27, 2006
  6. Toyotec
    Sticky

    Fuel pumps and flow capablity

    Toyotec, Apr 14, 2011
    Replies:
    9
    Views:
    8,045
    Dave
    Jul 3, 2024
  7. A.N. OTHER
    Sticky

    Technical Engine Performance Discussions Index

    A.N. Other, Nov 27, 2013
    Replies:
    0
    Views:
    3,347
    A.N. Other
    Nov 27, 2013
  8. davkav
    Sticky

    Idle Stabilisation Valve (ISV) teardown

    davkav, Apr 17, 2018
    Replies:
    10
    Views:
    1,572
    xav
    Oct 9, 2022
  9. Brian.G

    Crankshaft types and differences

    Brian.G, Jan 1, 2010 ... 2 3
    Replies:
    40
    Views:
    86,300
    Brian.G
    Jun 25, 2013
  10. A.N. OTHER

    4 cyl big block oil pumps - how many versions? FAQ added p2. Updated p4.

    A.N. Other, Aug 18, 2009 ... 6 7 8
    Replies:
    148
    Views:
    62,920
    pingman
    Aug 23, 2016
  11. Nige

    Ebay / VMI Forged Conrods & Bolts. Never again..... !

    Nige, Sep 3, 2014 ... 9 10 11
    Replies:
    205
    Views:
    55,281
    Magnata820
    Sep 27, 2018
  12. MICKEY MARROWS

    Dry sump system what is available??

    mickey marrows, Nov 3, 2010 ... 2 3
    Replies:
    46
    Views:
    40,526
    RobT
    Jan 15, 2015
  13. SCOTTYMK2

    Stopping exhaust rattling/hitting underside of car!!

    scottymk2, Apr 18, 2007
    Replies:
    19
    Views:
    34,656
    luminosa
    Apr 20, 2007
  14. 1982.RPD

    How to tune 8v gti mk2???

    1982.rpd, Apr 17, 2007 ... 2 3
    Replies:
    41
    Views:
    30,627
    Tristan
    Jul 6, 2015
  15. ALTERN8

    Can you clean the Coolant expansion tank

    altern8, Apr 10, 2009 ... 2 3
    Replies:
    52
    Views:
    28,376
    crayon
    Jul 31, 2014
  16. Brian.G

    Chemical cleaning of alloy parts

    Brian.G, Jun 21, 2010 ... 2
    Replies:
    29
    Views:
    27,674
    bootsie
    Sep 17, 2021
  17. A.N. OTHER

    7A Audi 90 engine - what's the lineage?

    A.N. Other, Aug 17, 2010 ... 3 4 5
    Replies:
    83
    Views:
    26,523
    Toyotec
    Nov 1, 2015
  18. SDJ_MK3

    Compression 2E vs ADY vs AGG

    sdj_mk3, Apr 26, 2007
    Replies:
    19
    Views:
    24,296
    rubjonny
    May 8, 2007
  19. A.N. OTHER

    VW alloy blocks - what are the origins?

    A.N. Other, Sep 30, 2010 ... 2 3
    Replies:
    53
    Views:
    24,058
    Tristan
    Mar 30, 2015
  20. CABRIOLETMK3

    coolant temp sensor what does it do?

    cabrioletmk3, Mar 16, 2006
    Replies:
    14
    Views:
    23,957
    ivork
    Feb 19, 2014
  21. JONATHANHANSSEN

    Mk2 Top fill Radiator Conversion Help Needed

    jonathanhanssen, Aug 3, 2009 ... 2
    Replies:
    39
    Views:
    23,864
    Carey85
    Nov 8, 2015
  22. A.N. OTHER

    Crank pulley vibration dampers & harmonics. Update: Lightweight crank pulleys = Bad

    A.N. Other, Jan 18, 2010 ... 4 5 6
    Replies:
    119
    Views:
    23,783
    mec82
    Feb 21, 2012
  23. ambrose89

    best engine for high power/weight ratio? AKA Ben's Cab

    ambrose89, Jun 1, 2007 ... 18 19 20
    Replies:
    395
    Views:
    23,427
    fthaimike
    Sep 24, 2010
  24. A.N. OTHER

    Drilling and tapping an engine block. How hard is the stuff?

    A.N. Other, Jun 30, 2008
    Replies:
    19
    Views:
    23,370
    mk28vICED
    Jul 22, 2010
  25. ADE.MK1

    Best MK1 Engine Conversion

    Ade.Mk1, Feb 2, 2006
    Replies:
    14
    Views:
    23,289
    nelo
    Feb 6, 2006
  26. PISTOL PETE

    16 Valve: Replacing coolant return hose

    pistol pete, Aug 21, 2006
    Replies:
    10
    Views:
    21,156
    Phil.
    Aug 31, 2006
  27. Riley

    feckin g60...the end? seems so :-)

    Riley, Oct 15, 2005 ... 17 18 19
    Replies:
    377
    Views:
    20,222
    KeithMac
    Jan 9, 2006
  28. HANDBRAKEHARRY

    Mk2 Golf GTI 8v external fuel pump?

    handbrakeharry, Dec 20, 2006 ... 2
    Replies:
    27
    Views:
    19,938
    costel1969
    Aug 29, 2021
Showing threads 1 to 20 of 22,383

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